Specification Brand : HIGHDRIL BulletPoint1 : 1pc Diameter 8mm(5/16"),working length 25mm(1"),Grit 45/50,5/8-11 thread BulletPoint2 : Use the 25mm long bit in preparation for repointing work and the longer 100mm bit for behind pipes or complete brick removal BulletPoint3 : High quality diamonds with vacuum brazed technology,longer life, faster stock removal and less vibrations than tungsten routers BulletPoint4 : Ideal for fitting air bricks or wall vents, removing old mortar prior to repointing or removing blown, damaged bricks or natural stone BulletPoint5 : Machine:Angle grinders 5/8-11 thread,Ideal for both professional contractors and DIY users BulletPoint6 : Great for glass, tile, ceramics, porcelain and stone. Color : 5/8-11 Thread CompatibleMaterial : Porcelain, Tile, Marble, Brick, Stones, Granite, Ceramic CutType : Straight Cut ExternallyAssignedProductIdentifier1 : 791180068644 ExternallyAssignedProductIdentifier2 : 0791180068644 ExternallyAssignedProductIdentifier3 : 5915903793179 FinishType : Diamond GpsrSafetyAttestation : 1 IncludedComponents : Drill Bit ItemName : Diamond Mortar Raking Bit - HIGHDRIL 5/16" x 1" (8mm x 25mm) 5/8-11 Thread Diamond Mortar Router for Old Mortar,Blown,Damaged Bricks or Natural Stone Removal ItemPackageDimensions_Height : 5.7912 centimeters ItemPackageDimensions_Length : 2.6924 centimeters ItemPackageDimensions_Width : 2.6924 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : core-drill-bits Manufacturer : HIGHDRIL Material : Diamond Coated Material1 : Tungsten Material2 : Diamond ModelNumber : HD132008203 NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : HD132008203 ProductDescription : Description: Can use a mortar raking blade for long horizontal joints Better suited to use on intricate and delicate work, particularly vertical joints and natural stone jobs to avoid damaging important brickwork or valuable stone Hold the grinder firmly, ensuring the handle is fitted Let the machine and bit work together at their own pace